Oven-ventilator.



y ne. 741,474.

JAMES FRANCIS FERRY, .OF LEADVILLE, COLORADO, ASSIGNOR OF ONE- PatentedOctober 13, 1903.A

PATENT OFFICE.

"HALF `To FRANK LOMErsTEE, OF L EADvILLE, COLORADO.

ovEN-vEfNTiLAToR..

SPECIFICATION forming part of I'Jetters Patent N o. 741,474, dated Octobe; 13, 1903.

' Application flied Apiii 17, 1903.

To all whom it may con/cern.:v

Be it known that I, JAMES FRANCIS FERRY, a citizen of the United States,and a resident of Leadville, in Ithe county of Lake and State ofColorado, have invented a new and Improved Oven-Ventilator, of which thefollow` ing is a full, clear, and eXact description.

Y This invention relatesto improvements in ingmy invention and thenpoint out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specicationf, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a sectional elevation of an oven with a ventilator embodyingmy invention therein and in open position. Fig 2 is a similar sectionshowing the ventilator as nearly closed. Fig. '3 is a section on theline 3 3 ofv Fig. 2. Fig. 4 is a section on the line 4 4 of Fig. 2, andFig. 5 is a perspective view of a guide and flue plate employed.

Referring to the drawings, 5 indicates the oven, and 6 the swinging doortherefor.

. end of which is pivotally connected to a swinging lever 16, the upperend of which is eX- tended into a guide-loop 17. Extended out- TheV sidewall of the oven is provided with an open-j ing 7, designed tocommunicate with the ii'uev Striano. 1531050. (Np'modem wardly from thelever 16 is an arm 18, the end of which is curved vupward and isdesigned to be engaged by the oven-door.

All of the parts above described being arranged within the oven, thereis no danger of burning the same by heat or iiame passing around theoven.

It will be noted-- that the outer end of the rod 15 is provided with aseries of holes through any one of which abolt may be passed to securethe rod to the lever 16, thus adjusting the ldevice to dierent sizes ofovens.

In the operation upon closing .the ovendoor it will by engaging withthecurved end of the arm 18 move the damper to closing position. It maybe here stated, however, that the damper is never entirely closed, aslight opening being left between the end of the damper and the end wallofthe plate 8 and a slight opening between the bridge-piece 9 and thewall ofthe opening in the damper toward the rod 15, and through theseslight openingsv fumes arising from the material lever 16, yconsequentlymoving the damper to open the lines 10 .and 11, as Vclearly shown, inFig. 1.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1.Y The combination with an oven having an opening'inits side wall, of a guide-plate secured to the inner side -of said sidewall over `the opening and having a bridge-piece also having'guidesatits sides, a damper-plate movable in said guides and having anopening', a swinging lever in the oven, a rod connecting the damper withsaid lever, and anl arm extended from the lever and designed to beengaged by the oven-door.

2. The combination with an oven having an opening in its side wall, of aplate secured to the inner side of the ovenover said opening and havinga bridge-piece, and also having guides at its sides, a -plate movable insaid guides and having an opening, 'a swinging lever, a rod connectingthe damper-plate with the swinging lever, and an arm extended outl door,the said arm being Weighted to cause Io Ward from seid level', the saidarm having an upwardly-curved end.

3. The combination with an oven having Ln opening in its side wail, of adamper for Controlling said opening, a swinging level', arod connectingthe lever with the damper, and an arm extended outward from said level`for engaging against the inner side of the ovenan opening movement tothe damper.

In testimony whereof I have Signed my name to this specification in thepresence of two subscribing Witnesses.

JAMES FRANCIS FERRY.

XVitnesses:

E. W. FRYER, W. R. DUFF.

